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muscle anal The internal anal sphincter, IAS, or sphincter ani internus is a ring of smooth muscle that surrounds about .–. cm of the anal canal.. Gain full access to our 18+ videos and photos by joining our Telegram channel today! Where are the anal sphincter muscles? The internal and external anal sphincter muscles are two interconnected rings of muscles at the lower end of the rectum. muscle anal Find the best adult content waiting for you on our Telegram channel. Ringlike muscles called sphincters surround your anus and keep it closed until they're activated to let your poop come out. What is the. Tap "open" to become part of our vibrant community by subscribing to our channel. The internal anal sphincter (IAS is a continuation of the rectal muscle under autonomous control and is responsible for maintaining anal continence at rest. Get ready to explore a world of the hottest adult content—right at your fingertips. Internal anal sphincter muscles: The inner ring of muscles. It works all the time to keep the stool (poo in and relaxes when opening your do not.
